Goodwill and Intangible Assets (Details 1) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, accumulated amortization	$ (8,582)	$ (6,457)
Total	52,045	56,017
Indefinite-lived Intangible Assets [Line Items]
Intangible assets gross carrying amount	60,627	62,474
Intangible assets net carrying amount	52,045	56,017
In process research and development (IPR&D)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	17,765	18,311
Trademarks and Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	39,167	40,380
Finite-lived intangible assets, accumulated amortization	(7,533)	(5,684)
Total	$ 31,634	$ 34,696
Weighted average remaining amortization period	11 years 1 month 6 days	12 years 9 months 18 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 3,695	$ 3,783
Finite-lived intangible assets, accumulated amortization	(1,049)	(773)
Total	$ 2,646	$ 3,010
Weighted average remaining amortization period	7 years 1 month 6 days	7 years 10 months 24 days